package com.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginInterceptor implements HandlerInterceptor {


        @Override
        public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
                throws Exception {
            // TODO Auto-generated method stub
            HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
        }

        @Override
        public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                               ModelAndView modelAndView) throws Exception {
            // TODO Auto-generated method stub
            HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
        }

        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
                throws Exception {
            System.out.println("进入登录拦截器");
            HttpSession session = request.getSession();
            Object eid = session.getAttribute("user");

            if (eid==null) {
                System.out.println("未登录");
                response.sendRedirect("/login.html");
                return false;
            }
            System.out.println(session.getId());
            return true;
        }


    }
